> Giampaolo Tomassoni wrote: > > Well, I use and like URIBL_SBL, but please note that a centralized solution > > may easily be "fooled" the other way around, by giving it RRs which are not > > the ones most people will see and will query for through the URIBL_SBL > > itself. In order to do this spammer only need to know the address of the DNS > > server(s) acting as resolvers for SpamHaus...
by the way, it's possible to avoid that by "proxying" lookups through open recursive servers, whether ones set up by friendly ISPs, or "open" ones like 4.2.2.2. --j.
